Insole-heel-seat-trimming machine.



E. E. WINKLEY. INSOLE HEELSEAT TRIMMING MACHINE.

@13432'1 Patented Mar. 30, 1915.

' 2 SHEETS-SHEET 1.

APPLICATION FILED APE.27,1912.

I E. E. WINKLEY. INS'OLE HEEL SEAT TRIMMING MACHINE.

APPLICATION FILED APR. 27, 1912.

Patented Mar. 30, 1915.

2 SHEETS-SHEET Z.

ERASTUS E. WINKLEY, OF LYNN, MASSACHUSETTS.

INSOLE HEEL-SEAT-TRIMMING MACHINE.

Specification of Letters Patent. Patented Mar. 3Q, 1915.

Application filed April 27, 1912. Serial No. 693,643.

To all whom it may concern Be it known that I, ERASTUS E. WVINKLEY, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Insole-Heel- Seat-Trimming Machines, and' I do hereby .heel seats to make them conform to the size of the last bottom. These machines are called insole heel seat trimming machines and usually comprise a suitable operating tool, a support for the insole mounted for movement to transfer the tool along the heel seat edge of the insole, and a clamping device adjacent the tool for holding the insole from movement on the support under the thrust of the tool. In the machines heretofore devised for performing this operation the clamping device employed for holding the insole from movement on its support under the thrust of the tool is fixed with relation to the tool so that as the support is moved during the trimming operation there is a constant tendency for the clamping device, as the insole drags beneath it, to displace the insole upon the support and thus destroy the accuracy of the cut.

The object of the present invention is to produce a machine of this class in which the insole is uniformly supported for the operation of the tool in such manner that there isno tendency for either the tool or the clamping device to distort the insole on the support and thus destroy the accuracy of the out. To the accomplishment of this object a feature of the invention contemplates the provision, in a machine for making insoles, provided with an operating tool, an insole support movable to transfer the operating tool along the heel seat edge of the insole, and a clamping device for holding the insole from movement under the thrust of the tool, of means for positively actuating the device tomaintain it in fixed relation to the support as it moves during the trimming operation. With the clamping device thus actuated, the heel seat end of the insole upon which the machine operates, is always properly positioned on the sup.

port for the operation of the tool as there is no tendency for. the device to displace the sole on the support and thus distort the sole so as to destroy the accuracy of the cut. A machine embodying this form of clamping device .mav therefore be successfully employed upon the cheaper grades of insoles which are of such fibrous and spongy leather that even the trimming by hand must be carefully performed and under conditions where the employment of clamping devices such as have heretofore been embodied in this class of machines would result in a misshapen insole or the production of otherwise imperfect work.

The preferred embodiment of the invention is illustrated in the accompanying drawings, in which:

Figure 1.is a side elevation with some parts broken away to better illustrate the mechanism; Fig. 2 is a plan of the parts shown in Fig. 1; Fig. 3 is a plan of an in sole attached to a last with the clamping device in position; Fig. 4 is an enlarged section of parts on the line H of Fig. 2; and Fig. 5 is a modification of. the clamping de vice.

As is well known to those skilled in the art, the first step in assembling the parts in the manufacture of a welt shoe consists insecuring an insole in place upon the bottom of a last. Theoretically the insole is supposed to fit the last accurately, but on account of the stretching of the insole in the channeling and lip setting operations, it is found that, when the insole is fitted to the last with its forepart coinciding with the forepart of the last, there is frequently a portion of the heel seat end of the insole which projects beyond the heel of the last.

In order to trim the heel seat, when the sole has been stretched, in conformity with the outline of the last there is provided, as shown in the illustrated embodiment of the invention, a heel seat trimming tool which may be of any desired form, such, for instance, as a rotary cutter 1. The cutter is located at an operating station and is secured (see Fig. 4) to a shaft 2 by a key 3 sheaves 10 to a sheave 11 on apower shaft mounted-on the column. The power shaft spindle may be driven from any suitable source, applied by a belt on a pulley 12. Below the cutter 1 (see Fig. 4) and freely rotatable about the shaft 2, is a circular last gage 13 having a thin flange or guard 14 which enters between the insole and last and supports the margin of the insole for the action of the cutter without interference between the cutter and the edge of the last. The gage 13 will cause the insole to be presented to the cutter wherever it projects beyond the edge of the last bottom and will prevent too deep a cut in the insole. It is apparent that the cutter 1 may be so formed as to cut any form of edge on the insole that may be desired.

During the operation of the tool the work is supported on a jack, indicated as a whole by J This jack is supported at the end of an arm 15 which is piyotally connected by a shaft 16 with a second arm 17 The arm 17 is free to turn about screws 18 secured in lugs projecting from-the supporting column 7. lVith this constructon the jack is mounted at the endof one link of a toggle and is universally movable in a horizontal,.or the operating, moved to transfer the operating tool along the edge of the insole. I

The jack J is provided with a spindle 19 mounted to slide in a sleeve 20 which also forms a pivot for the jack on the arm 15. The sleeve 20 is supported in a bearing 21 formed at the end of thedlower portion of the arm 15 and is held from displacement by check-nuts 22. The. lower end of the sleeve 20is closed by a plug 23 bored out for the reception of a rod 24 which sustains the 19 carrying the heel pin. A coiled spring shoulder on the spindle and the plug'23, and sustains said spindle yieldingly. In'order that the last may be held on the spindle in a substantially horizontal position, a horizontal support 26 extends from the upper part of the sleeve 20 and a toe-rest 27 is mounted thereon. The toe-rest is adjustable toward and from the heel spindle by means of a nut 28 which clamps the toe-rest standard 29 in a slot in the arm 26. The toe-rest is vertically adjustable by means of a screw 30 having a projecting end 31 which may be turned by a wrench.

It is customary to secure the heelseat of the insole :to the last by a tack 32 (Fig. 4). This tack,- however, is insufficient to prevent the insole from being displaced upon the last under the thrust of the operating tool. In order to hold the insole from movement upon its support under the thrust of the tool the machine of the drawings is provided with a clamping device, or plate, 33 arranged to engage the heel seat of the insole. The clamping plate is removably secured-by a set screw 34 to a stud 35, loosely mounted in a bearing 36formed at the endof the upplane to permit the jack to be" 25 surrounds the rod 24 between a per portion of the arm 15. The clamping In order to prevent the clamping device from displacing the insole as the jack is zmoved to transfer the operating tool along the edge of the insole the illustrated embodiment of the invention is provided with mechanism for maintaining the clamping device in fixed relation to the jack as it moves during the trimming operation. Mechanism for this purpose comprises a sprocket 37 secured to the upper end of the stud and connected by a chain 38 with a sprocket 39 secured to the upper end of the shaft 16. The lower end of the shaft is provided with a'sprocket 40 connected by a chain 41 with a sprocket 42 secured to the support 26. It is apparent that any rotary motion imparted 'to the jack will be positively transmitted to the clamping device which will always maintain a fixed relation to the jack as it moves during the trimming operation.

The work is placed upon the jack and removed therefrom at a receiving station located out of therange of the cutter at the operating station. To thi end an arm 44 is mounted on the column and its free end is provided with fingers 45,'which, as the operative moves the jack to the left and rear, as viewed in Fig. 2, will guide the rod 24 into the notch 46 between them. A lever 47 is pivoted in'ears 48 depending from the arm 44 and is provided at its free end with a fork 49. When the rod-24 is in the notch 46 the fork 49 will embrace the rod and lie above a collar 50 fixed onthe lower end of the rod.- A treadle rod .51 connects the lever 47 with a treadle 52 which is normally lifteddraw theheel pin of the last sufficiently to permit the removal of the last and' substitution of another. When the treadle is released, the spring 25 will lift the last and clamp the heel seat of the insole S between the clamping plate 33 and the heel seat of the last.

A modified instances for the purpose of exerting a more even pressure upon theheel portion of the form of the clamping plate I} 'hereinbefore described is employed in some what thinner and the rubber pad may be cemented to the lower surface of the plate. The rubber pad 55 may, if desired, cover the entire surface of the heel plate as the rubber will compress and thus allow for the curvature of the heel seat. The rubber sole engaging surface is of especial advantage in providing a more even distribution of the pressure, and by so doing increasing the resistance of the insole to any tendency to creep during the trimming operation.

The operation of the machine is controlled by the operative. After fastening a clamping plate 33, of a size to correspond to the work to be performed, on the stud 35, the treadle is depressed to permit the insertion of a last and sole. This is done while the rod 25 is engaged in the notch 46 at the receiving station where the treadle is operatively connected with the spindle. Upon releasing the treadle, the spindle 19 is lifted by the spring 25 which clamps the heel seat of the insole between the clamping plate 33 and the last. The jack J is now swung to a position where the last engages the gage 13 and is thereafter turned about the sleeve 20 as a pivot to present as much of the perimeter of the heel seat to the cutter as may be necessary, the average extent of the trimmed olf portion being indicated between the full and dotted lines at A in Fig. 3.

Obviously, changes may be made in the form, character and relation of the parts herein described, within the scope of the in vention, characterizing features-of which are set forth in the claims by the intentional use of generic terms and expressions inclusive of modifications.

l Vhat is claimed as new, is I 1. An insole heel seat trimming machine for trimming to the contour of the heel end of the last, the heel portion of an insole attached to the bottom of the last, having, in combination, an operating tool,- gaging means for relatively positioning the last and tool including a thin flange or guard to enter between the insole and last and support the margin of the insole for the action of the tool without interference between the tool and the edge of the last, and insole support including a last movable to transfer the operatingtool along the heel seat edge of the insole,a device for holding the insole from movement under the thrust of the tool,

W and means for positively actuating the device to maintain it in fixed relation to the sus ort as it moves durin the trimmin operation, substantially as described.

2. .An insole heel seat trimming machine, having, in combination. an operating tool, an insole support universally movable in the operating plane to transfer the operating tool along the heel seat edge of the insole, a device for holding the insole from movement under the thrust of the tool, and means for maintaining the device in fixed relation to the support as it moves during the trimming operation, substantially as described.

3. An insole heel seat trimming machine, having, in combination, an operating tool, a rotatable insole support universally movable in the operating plane to transfer the tool along the heel seat edge ofthe insole, a device for holding the insole from movement under the thrust of the tool, and means for positively actuating the device to main tain it in fixed relation to the support as it moves during the trimming operation, substantially as described.

4:. An insole heel seat trimming machine, having, in combination, an operating tool, a toggle pivotally connected at its inner. end to the machine frame, an insole support mounted at the outer end of said toggle, a second parallelly arranged and similarly mounted toggle, a device mounted at the outer end of saidsecond toggle for holding the insole from movement under the thrust of the tool, means for clamping the insole between said support and device whereby the insole may be universally used in the operating plane to transfer the tool along its heel seat edge, and means for maintaining said device and support in fixed relation to each other as the support moves during the trimming operation, substantially as described.

5. An insole heel seat trimming machine for trimming to the contour of the heel end of the last the heel portion of an insole attached to the bottom of the last, having, in

combination, anoperating tool, gaging" means for relatively positioning the last and tool including a thin flange or guard to enter between the insole and last and support the margin of the insole for the action of the tool without interference between the .tool and the edge of the last, an insole support including a last, and a plate having a depending peripheral wall of elastic material for pressing the marginal portions of the heel part of the insole upon the support, substantially as described.

6. A machine for use in the manufacture of boots and shoes, having, in combination,

an operating station, a receiving station, a work support, a clamp cooperating with the support for clamping the work, means permitting the work support to be swung in a horizontal plane forward and backward to transfer the work from one station to the other, and means located at the receiving station for unclamping the work, substantially as described.

7. An insole heel seat trimming machine for trimming to the contour of the heel end of the last the heel portion of an insole attached to the bottom of the last, having. in combination, an operating tool, gagin means for relatively positioning the last and tool including a thin flange or guard to en whereby one vter between the insole and last and support the margin of the insole for the action of the tool without interference between the tool and the edge of the last, a rotary device including a last for-supporting the work for the operation of the tool, a rotary device for holdingthe work from movement onthe support under driving connections between said devices tion of the other, substantially asdescribed.

8. A-machine for use in the manufacture ofboots and shoes, having, in combination, an operating tool,a device forsupporting the work for the operation of the tool, a device for holding the work from movement on'the support under the thrust of the tool,

said devices being rotatable about the same axis, a shaft, and chain and sprocket con-- nections from each device to the shaft whereby the other, substantially as described.

9. An insole heel seat trimming machine for trimmingto the contour of the'heel end of the last the heel portion of an insole attached to the bottom of the-last, hav ng, in

combination,

means for relatively positioning the last'and tool-including a thin flange orguard to enter between the insole and last and support the .margin of the insole for the action of the tool without interference between the tool and the edge of the last, an insole support including a last, and a device for holding the insole port comprising a plate having a vertical wall depending from its peripheral edge bearing upon the insole, substantially as described.

10. An insole heel seat trimming machine for trimming to the contour of the heel end the thrustof the tool, and.

device is rotated by the rotaof the tool, and means one device is rotated by the rotation of an operating tool, gaging from movement .on the sup of the last the heel portion of an insole at tached to the bottom of the last, having, in combination, an operating tool, gaging means for relatively positioning the last and "tool. including a thin flange or guard to enter-between the insole and last and support "the margin of the insole for the action of the :tool without interference between the tool last, an insole support- ;and the edge of the including a last movable to transfer the operating tool along the heel seat edge of the insole, a device forengaging and holding the insole from movement under the thrust vice in fixed relation to the supportas it moves during the trimming operation, substantially as describe 11. An insole heel seat trimming machine for-trimming to the contour of the heel end for holding said deof the last the heel portion of an insole at erating tool along the heel seat edge of the insole, H'lQStrSPlllCllG carried by the last support for entering the last pin socket, a plate for engaging and holding the insole from movement underthe thrust of thetool, and meansacting on oneof said two last named parts for' clampingthe insole and 'last, be

tween them, substantially as described.

ERASTUS 'E. WINKLEY. v Witnesses: i

CHARLES W. McDEimioT'r, EMILY-M. NUNN. 

